Question

Which of the following is a chemical change?

A. a solution of salt water being diluted as water is added to it.

B. a rock eroding as the wind removes particles from it.

C. soil drying as water evaporates.

D. silver tarnishing as the silver metal reacts with sulfur​

Answer 1

the answer is letter D!

Answer 2

Answer:

D. silver tarnishing as the silver metal reacts with sulfur​

Explanation:

A chemical change occurs when the identity of a substance is changed. Silver tarnishing is a chemical change because silver and sulfur react to form a new substance, silver sulfide. In the other examples, the substances have not changed their identity and only physical changes have occurred.